[llvm] [VPlan] First step towards VPlan cost modeling. (PR #67934)

[Florian Hahn via llvm-commits]

fhahn wrote:

It sounds like the slightly stripped down version (no cost for VPWidenRecipe for now) is the preferred version: https://github.com/llvm/llvm-project/pull/92555

Closing this one here

https://github.com/llvm/llvm-project/pull/67934